package string;

/**
 * @description: TODO
 * @author yumo
 * @version: 1.0
 * @date 2025/3/11 11:56
 */
public class StringBuilderDemo {
    public static void main(String[] args) {
        String str="好好学习java";
        StringBuilder builder=new StringBuilder(str);

        //append()追加内容在末尾
        builder.append(",为了找个好工作");
        System.out.println(builder);
        //replace()替换部分内容（含头不含尾）
        builder.replace(9,16,"就是为了改变世界");
        System.out.println(builder);
        //delete()删除部分内容（含头不含尾）
        builder.delete(0,8);
        System.out.println(builder);
        //insert()插入内容
        builder.insert(0,"活着");
        System.out.println(builder);






        /**
        //StringBuilder的创建方式：
        StringBuilder Builder1=new StringBuilder();//空字符串
        StringBuilder builder2=new StringBuilder("abc");//abc串
        //String和StringBuilder互转：
        String str="abc";
        StringBuilder builder3=new StringBuilder(str);
        */

    }
}
